Twilight

To help you sleep, this app changes how your display works. Blue light, like what comes out of a tablet or phone, is proven to keep people awake. If you have trouble falling asleep, you might’ve heard the advice to put away devices at least an hour before bed. The blue light disrupts natural sleep-cycles. But who doesn’t like to read, surf the web, or even check the weather from bed? Based on your profile, this ingenuous app works behind the scenes, and automatically adjusts the display based on the time of day by gradually adding red filters!